:root {
    --bg-color: #f8f9fa;
    --text-color: #212529;
    --card-bg: #ffffff;
    --header-bg: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    --header-text: #ffffff;
    --btn-bg: #2196F3;
    --btn-hover: #1976D2;
    --btn-download: #28a745;
    --btn-download-hover: #218838;
    --btn-telegram: #0088cc;
    --btn-telegram-hover: #0077b5;
    --btn-support: #FF9800;
    --btn-support-hover: #F57C00;
    --footer-bg: #212529;
    --footer-text: #ffffff;
    --border-color: #dee2e6;
    --shadow: rgba(0, 0, 0, 0.08);
    --card-shadow: rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] {
    --bg-color: #0d1117;
    --text-color: #c9d1d9;
    --card-bg: #161b22;
    --header-bg: linear-gradient(135deg, #1565C0 0%, #0D47A1 100%);
    --header-text: #ffffff;
    --btn-bg: #2196F3;
    --btn-hover: #1976D2;
    --btn-download: #28a745;
    --btn-download-hover: #218838;
    --btn-telegram: #0088cc;
    --btn-telegram-hover: #0077b5;
    --btn-support: #FF9800;
    --btn-support-hover: #F57C00;
    --footer-bg: #010409;
    --footer-text: #c9d1d9;
    --border-color: #30363d;
    --shadow: rgba(255, 255, 255, 0.03);
    --card-shadow: rgba(255, 255, 255, 0.06);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Oswald', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: var(--header-bg);
    color: var(--header-text);
    padding: 1.2rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.desktop-nav a {
    color: var(--header-text);
    text-decoration: none;
    font-weight: 400;
    transition: opacity 0.3s ease;
    font-size: 1.1rem;
}

.desktop-nav a:hover {
    opacity: 0.8;
}

.theme-toggle {
    background: none;
    border: 2px solid var(--header-text);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
    background-color: rgba(255, 255, 255, 0.1);
}

.theme-icon {
    font-size: 1.2rem;
}

.mobile-nav {
    display: none;
    align-items: center;
    gap: 1rem;
}

.hamburger {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--header-text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-menu {
    display: none;
    background-color: var(--header-bg);
    padding: 1rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu.active {
    display: block;
}

.mobile-menu a {
    display: block;
    color: var(--header-text);
    text-decoration: none;
    padding: 0.8rem 20px;
    font-size: 1.1rem;
    transition: background-color 0.3s ease;
}

.mobile-menu a:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

main {
    min-height: calc(100vh - 200px);
    padding: 4rem 20px;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    font-weight: 600;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.tool-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 15px var(--card-shadow);
    border: 1px solid var(--border-color);
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px var(--card-shadow);
}

.tool-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.tool-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.tool-card:hover .tool-image img {
    transform: scale(1.05);
}

.tool-content {
    padding: 1.5rem;
}

.tool-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.tool-content p {
    margin-bottom: 1.2rem;
    font-weight: 300;
    line-height: 1.5;
}

.btn {
    display: inline-block;
    background-color: var(--btn-bg);
    color: white;
    padding: 0.8rem 1.8rem;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn i {
    margin-right: 0.5rem;
}

.btn-download {
    background-color: var(--btn-download);
}

.btn-download:hover {
    background-color: var(--btn-download-hover);
}

.btn-telegram {
    background-color: var(--btn-telegram);
}

.btn-telegram:hover {
    background-color: var(--btn-telegram-hover);
}

.btn-support {
    background-color: var(--btn-support);
}

.btn-support:hover {
    background-color: var(--btn-support-hover);
}

.button-group {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.button-group .btn {
    flex: 1;
    min-width: 200px;
    text-align: center;
}

.tool-page {
    max-width: 900px;
    margin: 0 auto;
}

.tool-header {
    text-align: center;
    margin-bottom: 2rem;
}

.tool-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.tool-detail-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 5px 20px var(--shadow);
}

.tool-description {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    font-weight: 300;
}

.back-link {
    display: inline-block;
    margin-top: 2rem;
    color: var(--btn-bg);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    transition: opacity 0.3s ease;
}

.back-link:hover {
    opacity: 0.8;
}

.content-page {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.content-page h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.content-page p {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-weight: 300;
}

footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 3rem;
}

footer p {
    font-weight: 300;
}

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }

    .mobile-nav {
        display: flex;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2rem;
    }

    .logo {
        font-size: 1.5rem;
    }

    .tool-header h2 {
        font-size: 2rem;
    }

    .content-page h2 {
        font-size: 2rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}